#ifndef BIGGIRTH#define BIGGIRTH#include <stdlib.h>#include <iostream.h> // C++ I/O library header#include "Random.h"class NodesInGraph{ public:  int numOfConnectionParityBit;  int *connectionParityBit;  int numOfConnectionSymbolBit;  int *connectionSymbolBit;  int maxDegParity;  NodesInGraph(void);  ~NodesInGraph(void);  void setNumOfConnectionSymbolBit(int deg);  void initConnectionParityBit(void);  void initConnectionParityBit(int deg);};class BigGirth { public:  int M, N;  int K;  int EXPAND_DEPTH;  char *filename;  int *(*H);  int *localGirth;    NodesInGraph *nodesInGraph;  Random *myrandom;  BigGirth(int m, int n, int *symbolDegSequence, char *filename, int sglConcent, int tgtGirth);  BigGirth(void);  void writeToFile_Hcompressed(void);  void writeToFile_Hmatrix(void);  void writeToFile(void);  void loadH(void);  ~BigGirth(void); private:  int selectParityConnect(int kthSymbol, int mthConnection, int & cycle);  void updateConnection(int kthSymbol);};#endif